Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
487 institutional managers reported holding IREN for the quarter ended Mar 31, 2026. Together they hold about 49% of shares outstanding; the top 10 hold 24%. 160 opened new positions; 67 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Defiance ETFs, LLC | 12.67M | 3.80% | $433.9M | opened | 2026 Q1 |
| Situational Awareness Partners LP (focused) | 11.70M | 3.50% | $400.6M | opened | 2026 Q1 |
| Situational Awareness LP (focused) | 11.70M | 3.50% | $400.6M | added +34.5% | 2025 Q1 |
| Citigroup INC | 10.90M | 3.27% | $373.3M | added +10.4% | 2024 Q2 |
| BIT Capital GmbH | 6.53M | 1.96% | $223.5M | trimmed -6% | 2022 Q2 |
| D. E. Shaw | 6.43M | 1.93% | $220.3M | trimmed -44.9% | 2024 Q4 |
| Goldman Sachs | 5.57M | 1.67% | $190.7M | trimmed -24.3% | 2021 Q4 |
| UBS | 4.78M | 1.43% | $163.5M | added +50.6% | 2021 Q4 |
| Value Aligned Research Advisors, LLC | 4.77M | 1.43% | $163.2M | added +35.6% | 2025 Q2 |
| BlackRock | 4.46M | 1.34% | $152.6M | added +604.9% | 2022 Q2 |
| Marex Group plc | 3.92M | 1.17% | $134.2M | trimmed -12.4% | 2025 Q3 |
| Morgan Stanley | 3.75M | 1.12% | $128.2M | trimmed -49.1% | 2021 Q4 |
| Cantor Fitzgerald, L. P. | 2.94M | 0.88% | $100.6M | trimmed -15.3% | 2024 Q2 |
| Two Sigma | 2.86M | 0.86% | $98.1M | added +991.2% | 2023 Q2 |
| Jane Street | 2.85M | 0.85% | $97.8M | trimmed -49% | 2023 Q3 |
| State Street | 2.62M | 0.79% | $89.7M | added +343.6% | 2022 Q3 |
| Bank OF America CORP /DE/ | 2.14M | 0.64% | $73.2M | added +58.4% | 2024 Q1 |
| Clear Street Group INC. | 2.06M | 0.62% | $70.7M | trimmed -43.1% | 2025 Q4 |
| Capital Research Global Investors | 1.97M | 0.59% | $67.6M | added +92.5% | 2025 Q4 |
| Discovery Capital Management, LLC / CT | 1.83M | 0.55% | $62.8M | trimmed -29% | 2024 Q4 |
| Citadel Advisors | 1.77M | 0.53% | $60.5M | added +110.2% | 2023 Q4 |
| Tidal Investments LLC | 1.73M | 0.52% | $59.2M | added +3.7% | 2023 Q3 |
| Invesco | 1.71M | 0.51% | $58.7M | trimmed -16.4% | 2022 Q1 |
| National Bank OF Canada /FI/ | 1.68M | 0.50% | $57.5M | opened | 2026 Q1 |
| Voloridge Investment Management | 1.57M | 0.47% | $53.9M | trimmed -31% | 2025 Q2 |
| Toronto Dominion Bank | 1.45M | 0.43% | $49.6M | opened | 2026 Q1 |
| Bank OF Montreal /CAN/ | 1.37M | 0.41% | $46.9M | added +18.6% | 2025 Q3 |
| Millennium Management | 1.31M | 0.39% | $44.9M | added +28.4% | 2021 Q4 |
| Wolverine Asset Management LLC | 1.23M | 0.37% | $42.3M | trimmed -59.9% | 2025 Q4 |
| Barclays PLC | 1.18M | 0.35% | $40.3M | added +152.8% | 2024 Q2 |
| Mirae Asset Global Etfs Holdings LTD. | 1.17M | 0.35% | $39.9M | trimmed -15% | 2022 Q1 |
| Legal & General Group PLC | 1.16M | 0.35% | $39.6M | added +134.2% | 2025 Q4 |
| Mizuho Markets Americas LLC | 1.10M | 0.33% | $37.8M | trimmed -16% | 2024 Q4 |
| VAN ECK Associates CORP | 975.7k | 0.29% | $33.4M | added +0.8% | 2021 Q4 |
| Exchange Traded Concepts, LLC | 966.2k | 0.29% | $33.1M | added +106.5% | 2022 Q1 |
| Swiss National Bank | 963.6k | 0.29% | $33.0M | opened | 2026 Q1 |
| Neuberger Berman Group LLC | 892.0k | 0.27% | $30.5M | trimmed -54.6% | 2025 Q3 |
| Amundi | 845.1k | 0.25% | $28.9M | added +3865.8% | 2025 Q4 |
| Vident Advisory, LLC | 842.9k | 0.25% | $28.9M | trimmed -38.7% | 2022 Q1 |
| Baillie Gifford | 829.2k | 0.25% | $28.4M | added +57.1% | 2025 Q3 |
| Private Advisor Group, LLC | 813.1k | 0.24% | $27.8M | trimmed -15.5% | 2024 Q4 |
| CastleKnight Management LP | 806.2k | 0.24% | $27.6M | added +35.3% | 2024 Q3 |
| Alpine Fox Capital LLC (focused) | 750.5k | 0.23% | $25.7M | unchanged | 2025 Q3 |
| Bridgewater Associates | 720.9k | 0.22% | $24.7M | added +160.6% | 2025 Q3 |
| Geode Capital | 661.7k | 0.20% | $22.7M | added +28.6% | 2021 Q4 |
| Sumitomo Mitsui Trust Group, INC. | 609.1k | 0.18% | $20.9M | opened | 2026 Q1 |
| Weiss Asset Management LP | 605.6k | 0.18% | $20.7M | added +586.7% | 2025 Q4 |
| Banco Santander, S.a. | 600.3k | 0.18% | $20.6M | added +1219.5% | 2025 Q4 |
| Vanguard Group | 599.8k | 0.18% | $20.5M | added +1652.2% | 2022 Q3 |
| Wells Fargo & COMPANY/MN | 581.6k | 0.17% | $19.9M | added +32.9% | 2023 Q4 |
Largest 50 of 487 shown; the full ranked, searchable register is at boothcheck.com/holders/IREN. Related filers are grouped using the filings' own included-manager declarations. Historically, several managers opening new positions in the same quarter said almost nothing about the quarter that followed (59,118 cases since 2013). A filed record, not a forecast. Nothing here is investment advice.